Coffee maker



FIG. 1 is a top, front, and right side perspective (orthogonal) view of a coffee maker showing our new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a top plan view thereof; and

FIG. 4 is a front elevational view thereof. The bottom is planar and unornamented.

The undisclosed rear of the coffee maker is conventional in appearance. 

The ornamental design for a coffee maker, substantially as shown and described. 